PT-2019-19731 · Tengcontrol · Tengcontrol T-920 Plc

Ni9Htmar3 · Published 2019-03-06 · Updated 2021-07-21 · CVE-2019-9590

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions TENGCONTROL T-920 PLC version 5.5

Description An issue allows remote attackers to cause a denial of service, resulting in a persistent failure mode. This can be achieved by sending a series of specific requests, identified as UID 0x43, to the TCP port 502.

Recommendations For TENGCONTROL T-920 PLC version 5.5, as a temporary workaround, consider restricting access to TCP port 502 to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this issue.

Exploit

Fix

Related Identifiers

CVE-2019-9590

Affected Products

Tengcontrol T-920 Plc

References · 3

• 🔥 https://github.com/Ni9htMar3/vulnerability/blob/master/PLC/%E8%85%BE%E6%8E%A7/T920_PLC_DOS.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2019-9590 · Security Note
• https://osv.dev/vulnerability/CVE-2019-9590 · Vendor Advisory